Cold overnight with lowest temperatures of 1 to 5 degrees and becoming windy in the south and west. Rain in the west will gradually spread to all areas.
The rain will become heavy in the morning. It will fall as sleet or snow in parts of Ulster. In the afternoon, the northern half of the country will become dry and very cold with temperatures of just 3 to 6 degrees. It will continue wet and windy further south with temperatures of 8 to 12 degrees.
3 Day Outlook
Tuesday: Heavy rain will slowly clear northwards during the morning /early afternoon. However damp misty conditions will continue to persist around western and southern coastal districts and close to higher ground. The day will become windy but also much milder; temperatures rising to around 12 or 13 degrees in the strong southwesterly winds. Mild overnight with occasional mist and drizzle.
Wednesday: More heavy rain will spread from the west during the day and further rain will spread from the south overnight. Highest temperatures of 12 or 13 degrees. Becoming colder overnight with lows of 0 to 2 degrees with frost and icy stretches likely.
Thursday: The east and south of Ireland will be wet for much of the day (with the rain possibly turning wintry on higher ground), but it will gradually brighten up across Ulster and Connacht. Highest temperatures of 4 to 7 degrees. Overnight will be clear, cold and frosty with icy stretches on many roads and lowest temperatures of -4 to +1 degrees.
Friday: A frosty start to the day. Otherwise dry and bright for the day with highest temperatures of 4 to 8 degrees.